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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3e72479f992e3139ee39d8a2c006a0cd2817c4f0f26778cc7b4dd2ec105459ff' 
  AND token = 'TPCxSdHyIU9xqF4eF4NDEL1iSaezrcfzhGLmr96Icc0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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