Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c864e5e5d74a11b280efcf127a4cb54398614807ec143f371265e6bab34d31da' 
  AND token = 'HFMScINkSxW6+aBAgwE856vQJOaNKtkkz1qSEOA202Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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