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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fb4018f2c4fa9c0f5d89fb3205031247db9382e64757d730caf7420c0afe7fe5' 
  AND token = 'RWBsn2ifo2qnD+6tNiB42yrUGX2UB50wi7TFnV8kNG8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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