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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2d30d363a975322a4de8b7096b927d25c3763d9bf2da11b98d85dfac2d2860ca' 
  AND token = 'HaPEO2HwBfxv48WfIduSgMav034J3LkOgvCvT+sBPSQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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