Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd058f407524bdc1cee6d011b9fee521621ff76d94ddbf17cf890c4ba6dc6a118' 
  AND token = '+EGN5NTjBuNv9LCWWjj68+EeFXkVrsoREP9UzLLJtPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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