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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '220c13f9dfd4c232f88e2d8d545258fe188d58388a4b2fe268d89fd2f6b5fb12' 
  AND token = 'qe1OEy3EVEI114izTiWUwi/dEzs9F4hM9QSzLj13E98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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