Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b27022ac6c9fb3994e08ec4818a2ee9439c658ae388cd695e5468c60f2c0712b' 
  AND token = 'STlsRz8q69ftc5iN9SlLTA+F4479GvJvPJA0w+iC6N0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00079

JSON explain

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