Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddcdb0b17c5dba54e6dfa754f36453aad8ccbde8fd590b8583044711118c9656' 
  AND token = '1WjtEub65E5sN8M5xUi5f1whlq9vAOgmdPkzUk+IPF8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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