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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee06d8ea1dbe21309d92772d80a34a881abb617e64f5c2900c0847f32c023ce9' 
  AND token = 'Q1fmiPikPv4NGd7qXy1idDMdTBf1kIKRuyt7b2aLsgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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