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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d2e7da4ead149e3c80141a6ae36806e02c8b28985ae207e8c126dcaef372956' 
  AND token = '6aQDeL7vMaJwRAsbmHnOFjVzG8A102OW1x6ma1FjnCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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