Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13f45f07a3bce07a01d7a18aec3f1a76621f0381f209831f155a46a672f5e37e' 
  AND token = 'ejRIfpf7a9Qzl6/vAevYafyoiwFo8yKkSqjZl407oz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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