Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdda351714bd4c6c5cbd056765646784163fbe9bad2a6159372ce9b894a84d75' 
  AND token = 'EZtVlHH9gjXbtZCaQEHfWrvugmug5mEvEpcm8sczKYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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