SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '369e9cd50fb8246d0443f62f4ab13b869c10fd50e37e2e12d54b1fcadb255dfc' 
  AND token = 'Ahz37CEstuXD+xi6vgeJuEmKAG/SA50bP6wJpzz/FFQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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