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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '716c40b6aa523f5d84685bcd186626f3ddd470fe36e829573654905c40b80f13' 
  AND token = 'ltcSpI/d2oS+/OT4ROkpcRgTrux7FVxZJ36War86tT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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