Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f85b2e7c1bdac9075b1c4c1135cd18cfe952630a112c271bd687ec9601ae8a70' 
  AND token = 'YvQ49YdCVs1lQjCr3FboAhA4haT8DdPrfioVO38qdJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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