Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d845d88e90eda492859d6509e5f965349551ea8faf68133c8f44ad46f92c26f' 
  AND token = 'ScD3J9yvST+xd96R4x6X7FhdUCJn1axXETOMxC/0lWk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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