Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1abc8f25f1c1f9a7052c96a79376828927005226bc8d5ff4f65eeedae8848337' 
  AND token = 'vW1PqazaEnUfjMHGCjxI562pJ5aViW6yVN48CCRtMXE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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