Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '425bf1752cb88c1a53c07bae3e4c917bc46ea91c011f69118940465308fd149a' 
  AND token = 'RbC673wBJay2Ag+6o2DugTi++8p3VfO3SXD8mzv4DKY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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