Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92d1bbe89f6a152a2aecba0b9af946b2212713d709c97ad0d9fd8e055b940aca' 
  AND token = 'zWuYDN+q3eFnnB6X13MdSSc0m+X/PhEoTL4rbyaXen4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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