Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7c2f0cc0143b54f51af8019651a053b05e5ec8d11cccaf2189435de65c1e5e69' 
  AND token = 'xjqUYy7lDycRFYivgW3rfWW6X4iX+p0YpPSH9fkYyY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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