Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a2924ec3895d05518fd59c67dea7498b9583e80f0779a73ff8218fabc1a236e' 
  AND token = 'keN/9YKrNtonToHxkIhIWcCKAZKwoHnoR9+GNkiClQ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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