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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c22e5dc43054710149b44c7df57fff0e140deef3aaec8c2d79eb5f655cb3ea15' 
  AND token = 'AFWKmDWYu8DxS2HgpxLKzxNykXtrrf6htq7XFwB1uhs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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