SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '265ba0b4c50b4e9e65faaf26aa5d2c38c3c31780cd78b4375ffbf4c1d9b2cf1b' 
  AND token = 'W2Nkjv8HgS/f9eJ5+/kV11dwG/HHRFrneM/zDxvfcI0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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