Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b6784b304d0d5f5f964c213c5a263b1818429a2d4dc7d1330f129d87aeda0c2f' 
  AND token = 'oYq59uButoQchwSWzMn5CLD1xi2TVEOLJf5Hb3bx7NA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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