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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5358b2d025eaf97972eeb4d8c8bfe5dad78a840c9545f23ae850f6038a64a244' 
  AND token = 'a9oxXRSxPpm8UClUK2U1C0VHtv5IrAVcoe2pdsH2a7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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