Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba3352b937e4a6a721d4e64dbe482910dc1f356bdc4d78d9bea8cf92f90d2803' 
  AND token = 'Vp+Dav0zTclz/9JegdFrijkZTCHz/s0swkfkwuX/cDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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