Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '082fc9ae3c7474cc31c4ae9071978368fac37796045dc388e4a41d172ce617b5' 
  AND token = 'bIK9528zm1NhLwlAH+LF/HGvW3GC1hCsJl7C3VhsklQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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