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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf895b69d2e5da22ad511c67deec0ba86ab8a000ef4a40dc6250ea8190f00406' 
  AND token = 'goe8Szy3fG1HxtxhpaZEVClrcHCZXMTZKui3S0nsOoA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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