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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2078ee69e312e50fc83e2d461cdfa82c0f427cd7e2d2a5196433a829f2c580c7' 
  AND token = 'Zq7HypinN8sNLo99iePkKpz8COLqTMALaUKO5rSXm7o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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