Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a96e2f3fa4cce9a483d94a8fa113b470730c9b8a5985fe86668b448be4b6b0b' 
  AND token = 'O3rRDxVZihDviQmlbBdhLY7CvPCtLN5MK8LHHrPcShI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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