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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f043fa2aac7ef28b1c94b3e4c0902380bada431cd127c58f53e8963ddac419f' 
  AND token = 'eyL8DCU2o3qpOhrjxOlkqfHTDl16uX8kojJS9kdB1+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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