SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d2fac1abf33d2bed2e8ee67fb183478a8cc17c67ce728809ce580bf04a3d3da' 
  AND token = 'WZJYsv4cDM6rYd2o+h/nRpVxCqrxIAmziL3+hZjhv0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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