Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0045d7f456d582b1a80dd9051b92de1a46802ef795d86d33cc600ce22f159c2' 
  AND token = 'es5EeMymTJCGi6Y1O3IseoKazEsAF08bXzn0vOCH0tY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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