Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '465fe48225feedfa11a1c6df2d922ff3c5da0171e67678cb6fec4a2e8880ec6a' 
  AND token = 'Q6EZu38gYKinWGgBiPUalBvePO3qB1H4NfY7H31olTQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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