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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3db3d5e5f46f2fde10849f9bad69b66d6f0b8d8c487e126056e2711a3d6e128' 
  AND token = 'Ug0hXCpGC7og4OTZbqrrD87W1ttQyE/68egUwmy3dxo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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