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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1931e668c120cd668e5242071a3a5f5927e28bd9f16baa9289d63b8181473f70' 
  AND token = 'VWrfBNPSC1SYxzWUMbE0LtxAFpmBB6Tcu6MlzLaBYhI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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