Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce4757c2676a12215b685bcab9fb8a016cb60edc7ced2133d66cc3a724f54d65' 
  AND token = 'L1ofowWUjnVBRTtYhM5xEBxZNbXa1BLR1SwE4bP/tfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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