Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0bc80c11f9997d0edea180026d770cef624783c55f38d3387db3302de6ae2027' 
  AND token = 'NkzelrU5PGb7tu8vTaGzBnhxaVeVyGLiVh6BUWJQ3oc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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