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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '202a5cbcb3bdb69821e9edcaf0812931ee9c596331fec4154319b6bd9dd4cc74' 
  AND token = 'JNoIY07h7McNrsirJZ7EMar1GIfto8A4a+VxGqW6j5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}