Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5082a06b3b5b3300c596ccad06bc1873b381d1197f8da56c7e0cd052debb6e9c' 
  AND token = '/x2wY2QGdM3J8AH0AxcoLJWZPGn2Ut6CloYlySDH0hU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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