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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63405c227bb75f8c6c31f9ab505d0aeadd81711f2a085b6d75098054b1610799' 
  AND token = 'rDaRtQORCFdc8Vnw/6b+HP+y/69l1ybGnm0t/tk+/eQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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