Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bfb1cd03307e1f668cb4bc673b4e0770ebb4e855f441fb35a9eb3ea241514b0' 
  AND token = 'Jeyd0Z8KWRp+WrZ7ffzVAOakTVR8W9MDBWbGxX39us0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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