Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37026d10a13d4e48819a0f9d05fe0fadf3338f82a79d20ea66250dc7975f2692' 
  AND token = 'nNBcWjusg/OPgJGXEnje8kNCpRJB/r+aic0VPWjpYpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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