Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fcc32f2c069ef2af12bbce6ad1236fbc3a33f54d400d0dda6ff8ef0e1627f19f' 
  AND token = 'rMfhp67RjyAd9Im8pveto6W4NmDSu4ZvMPUtfhZvG8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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