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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7050df628a0686b0c67e7307f12da0c74f8f006743c9611177cf4c397adb81ae' 
  AND token = 'vDI+aBFcdrLk6lGhCr4/GwoHno32i/TNiNd39+4j5EE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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