Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '957a1f7fee21954aded46e10312f171f514e61e5132abee1186e611157893699' 
  AND token = 'j6c0dL92RMZTqjuNUlYCz+m1q3rKP7B2oO/SRcyhXr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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