Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e70b92ca9f7e404b3e2fb42603d19c90769ee676726748cc46744722b51d3bac' 
  AND token = 'OsikOajETXasvdUnN0P7vYmPWUOJuSRbFDmi/RHPWe0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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