Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d24027ac9231d4d624a1a3844b1bdd2cc64e14f59a2711e623e88ba90640b0b' 
  AND token = 'v5PryT1aq6R2LrKSwIUDliDmCahJ2Z/lQKds8h+r/To=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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