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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b922cf94622beff6ba2afdb5fa1f8681f5fda393a24c3f6a270a80ca8ac4ae8' 
  AND token = 'bFqM1J/9YpLb+zL1hjKSGrRboGtaR+IP0xMLKmfYfTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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