Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0402295a9488fcfe7f9c9789080f7db74e369205873d2ab48d5d74c05cf210d' 
  AND token = '+OqE/W/0SPi77PoI2YOZWOd5DnzmR1r7bkhLuNa3Agc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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