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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '60385aa870a72116e9d7f1b425c7bde9eeb3bb8e9c290584533910d0a30acca7' 
  AND token = 'Owp/UEM2QbyPfJAEH84O9UHPpQaI8IxpLw4GtO2iWto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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