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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e8d52c1750476bd50865593b545b4ad089cf6c9b67be7767432774f80bfe5016' 
  AND token = 'BVA1PIKA0sAAv2Lx7tLf+uzRfbk1Q6p9psX5g5I26Qs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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