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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5ca6db208fd269836e80f3e307433cfe9a8e25665c42ecac70deaab40d63cddf' 
  AND token = 'QhGlM1NEBr0WDjXsyRrn2NtGY0XuLL30Nx/7XfLq2Pk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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