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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e85653547c570a5b7f341d19e9c7d7285b18284b5eb70a73839237562ac2c106' 
  AND token = '+3A3ADQSJVCK1BsriHGcA1oEZz9FpZX/vRA5KDb9rs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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